I. Introduction:
I loved watching movies since I was a child, from VCD to DVD to Blu-ray BD now. As an old movie friend for almost 20 years, I have been paying close attention to the color performance of audio-visual equipment. A few years ago, in order to experience a bigger picture experience with less money, I started with a light bulb projector and a lifting curtain. At that time, 100 inch TV needed hundreds of thousands, and I only spent more than 10 thousand to experience the 120 inch super-large screen, which greatly increased my sense of presence in watching movies. When we have children, because the diffuse reflection of projection has little influence on human eyes, we also try to watch some early education courses on the projection.
In order to meet different use environments and needs, I have also configured and used different types of projection, but whether it is a halogen bulb or a micro-projection of LED light source, because the brightness is basically 1000-2000 ANSI lumens, the daytime viewing effect is still not ideal.
ANSI lumen is an important symbol of reference projection brightness. When measuring parameters, nine points will be used to calculate the average brightness of the projection. This brightness value is relatively low, but it is also much more accurate, so it is also called true brightness.
One day, before going to the cinema, I talked to the staff of the cinema about the NEC brand laser film machine used in their giant screen hall. The brightness can reach tens of thousands of lumens, which is really amazing. At the same time, I also know the position of NEC # 039 in the projection field. It is one of the four major brands of cinema projectors, and even the aerial display equipment of Daxing Airport is NEC brand, which shows its outstanding technical strength.
At this year's ISE 2022 exhibition, NEC displayed a number of latest laser projection products and 8K displays. Recently, NEC # 039 American household laser projector 3354 Knight series NP-CR3402HL was updated in China. NEC has always been synonymous with quality in my impression, but I am more exposed to enterprises and commercial products. I am very interested in this home laser projection and decided to take the opportunity to experience it.
2. What is the 2.NEC ARM NP-Cr 3402 HL laser projection?
1. laser light source with real brightness of 4000 ANSI lumens.
As we all know, for projection, the light source is an important factor that determines the image quality and brightness. At present, the light sources of projectors mainly include halogen lamps, LEDs and higher-end lasers. Laser not only has higher brightness and better monochromaticity, but also has high energy efficiency and longer service life.
Because of the excellent characteristics of laser, CR3402HL has the performance of 4000 ANSI lumens, so it can still display excellent images even when the lights are turned on during the day or at night.
2.0.65 inch large-size DMD chip
Besides the light source, the quality of the projected image also depends on the type and size of the chip. NEC NP-CR3402HL is a projector using DLP technology of Texas Instruments. DLP can be understood as a simple optical system. The light from the projection light source passes through the condenser lens and the color filter system, and then directly shines on the DMD. Different DMD sizes limit the final effect of DLP projection.
In the electronic age, we still follow the saying that the bottom is bigger than the bottom. The bigger the DMD, the easier it is to bring better picture quality. This is also easy to understand. The larger the DMD, the more light it can pass, and the less susceptible to the influence of neighboring pixels. The better the color display, the better the heat dissipation and the more stable the image quality.
NP-CR3402HL is equipped with a 0.65-inch DMD chip that can only be used on many 4K projectors, which has better image quality and clarity display and color reproduction ability. Although the native resolution is 1080P, it has the ultra-high definition display capability perfectly compatible with 4K, which can bring more delicate pictures.
3. Eight kinds of gamma gray scale and six kinds of wall color correction.
Many colleagues and friends know that I like watching movies and built a home theater. They also asked me about the effect and experience of the building. In the process of consulting me, I found that many people can only choose the wall for projection because the environment at home does not have the conditions to install curtains. However, many people in modern families are not satisfied with using only white walls for decoration, but mixing many colors.
At this time, if the projection is still on a pure white background and the default gamma gray level is used for projection, color shift will occur. NP-CR3402HL preset 8 kinds of gamma gray levels, and supported 6 kinds of wall colors to be corrected by one button, which undoubtedly saved a lot of trouble.
What is the actual performance of this NEC NP-CR3402HL projector that focuses on image quality and highlights? Then come and have a look with me.
Three. NEC NP-CR3402HL projector unpacking and appearance display;
After opening the multi-layer protective foam inside, all the accessories in the box are shown in the figure below. In addition to CR3402HL projection, it is also equipped with remote control, power supply, VGA analog data cable and manual.
CR3402HL projector adopts the very traditional design of Japanese brand, with white square appearance and beautiful atmosphere.
Dimensions: length 265mm * width 337mm * height 108mm. As the main projection of the living room, its size is not too big. The weight is 4.4kg, and there is no pressure on the commonly used projection hanger or bracket.
On the right is a big glass lens. Professional projection brands have their own advantages in optical design for many years. Glass lenses can also reduce the influence of working temperature on focusing, which is incomparable to resin lenses. The lens adopts DMD chip and closed light engine structure. The dustproof performance reaches IP6X level, which isolates the influence of external dust on the core components of the projector. The problem of internal heat dissipation is solved by matching the heat sink and fan with a large-area heat-conducting copper tube.
The machine is equipped with a zoom lens of 1.6 times, and supports the projection magnification of 1.40-2.24. It can achieve a 100 inch picture of about 3 meters, meet the requirements of building a cinema in a space with a long projection distance, and support vertical lens displacement and automatic four-way trapezoidal correction. Lens displacement is a very useful function, which can change the position of the projected light without degrading the image quality. If there is no projection brand with certain optical design ability, this function is really not available. Therefore, many emerging projection brands pay more attention to autofocus than optical zoom and lens displacement, which is also based on this reason.
The control key and indicator light are integrated above the projector, and some commonly used key functions are corresponding, so I won't go into details here. You can tell at a glance.
In addition, there is a full-function infrared remote control, which is more convenient to control.
The DLP in the lower right corner and the logo of Texas Instruments also show the technology used by the CR3402HL projector.
The side is a large-area heat dissipation structure, and the heat dissipation structure inside can be seen through the grille.
With nameplate information and laser warning label on the back. CR3402HL laser projection is a professional projection, so there is no built-in intelligent system, but the interface is very rich.
Two HDMI interfaces, which can be directly connected to various smart boxes, Blu-ray players, power amplifiers and game machines; The USB interface can be connected to a hard disk, and can also provide power for a wireless screen projector. It is also equipped with traditional composite video segment and 15 pin analog input used by computer.
The bottom of CR3402HL is a three-hole installation position, which makes the hoisting or rack installation more stable.
If you put it on a table, you can also adjust the inclination by adjusting the three rubber pads at the bottom.
Fourth, the high-quality experience of NEC NP-CR3402HL projector
CR3402HL projector can choose wireless projection components, which not only simplifies the connection, but also makes the connection between computer and mobile phone more convenient. It also has an automatic switch function. After the signal source is automatically searched, it can be automatically turned on and off according to whether the signal source is connected or not. After the user has finished using it, CR3402HL will automatically shut down.
The projection magnification of CR3402HL projector can be adjusted between 1.4-2.24. Please refer to the table below for the projection size and distance of the specific screen.
At present, the distance between my projection bracket and the curtain is about 3 meters, so the fixed bracket according to the projection ratio of 1.2 makes the curtain of 120 inch not full. Thanks to laser technology and large-size DMD chip, the brightness of 4000 ANSI lumens of CR3402HL projector is really amazing. Even if you open the curtain around 3 pm, you can feel its wonderful picture quality.
If the curtains are closed, it will be too late.
If you used halogen bulbs or LED projection before, you can feel the highlight and powerful color expression of CR3402HL projector.
Its color gamut covers up to 70% NTSC, which is basically the same as the volume of 100%sRGB, making the color effect reach or even exceed the current mainstream LCD TV.
CR3402HL also has a high contrast ratio of 300,000: 1. Whether in movies with frequent light and shadow changes or in the dark game dungeon, it can present more vivid pictures for users and effectively enhance the visual realism.
Even if some contrast is not obvious, it is easy to present a gray picture on ordinary projection, and the laser projection has a good sense of hierarchy.
The physical resolution of 1080P also gives the picture a good definition. The uneven pits on the helmet are clearly visible.
It is fully compatible with 4K Ultra HD resolution. Only when the Xbox has its own TV function can it support Dolby Vision, which makes it perfectly display the native 4K game screen of the Xbox.
The game world of Assassin's Creed and the simulation of sunny days gave me a sense of reality when I came to ancient Egypt. HDR technology can be used to reduce the huge difference between the brightest and darkest parts and make the picture look clearer without losing the details that are too bright or too dark.
I compared my previous two projections with the same shooting parameters, and the difference was obvious.
NEC NP-CR3402HL projector:
A brand of 3200 lumen bulb projector has a good brightness difference, but its color performance is one eye lower than that of NEC NP-CR3402HL. For the convenience of comparison, the position of this projection was moved, but its trapezoidal correction was troublesome, so it was not adjusted. At this time, the advantages of automatic trapezoidal correction of CR3402HL appear.
A brand 1000 lumen LED intelligent projector. Because of the same shooting parameters, the brightness difference of LED micro-projection is particularly obvious.
After that, I also took a contrast picture of all-black and 100W ceiling lamp at night for your reference. Although the brightness of light will still have an impact on CR3402HL, the overall color performance is not a big problem.
With the wireless screen projector, you can push the video from your mobile phone directly to CR3402HL via WiFi. The fluency is exactly the same as that on your mobile phone, but the screen can be dozens of times larger. You did a good job.
CR3402HL has its own speaker. Although the sound quality is not as good as the speaker, it is better than I expected. If this level of professional projection is built into a home theater, it will basically be used with a power amplifier, and there is not much problem. Show its effect through demonstration video.
rebroadcast
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CR3402HL is still a rare projector that supports 3D. Just configure DLP active 3D shutter glasses to open the 3D world.
The laser light source of CR3402HL has the advantages of high brightness, good color rendering, low energy consumption and long life. There is no problem of rapid attenuation of halogen bulbs and LED light sources, and the service life can reach 30,000 hours. According to the daily use of 4-6 hours, it can be used for more than 10 years.
The advantage of low energy consumption also makes its running noise very light and inaudible. Don't say it's better than halogen lamp, even if it's LED intelligent control. Even at night, its running sound is lower than mine.
As mentioned above, CR3402HL preset 8 kinds of gamma gray levels and 6 kinds of wall color correction, which allows users to get real projection images with one click under different wall colors without worrying about color distortion caused by wall colors.
This is also a simple experience here. I lifted the curtain halfway, so that the curtain and the wall appeared in a photo at the same time, showing a white picture. When the "Wall Color" option is turned off, there will be obvious color difference between two projection surfaces with different colors.
When I choose a light blue wall, the light blue wall turns white and the curtains turn pale yellow. Color correction is simple, quick and effective.
Verb summary:
I am an audio-visual enthusiast and use projection products more. If I want to perfectly reproduce the immersive visual experience of the cinema at home, the high brightness and high contrast of the projector are essential.
NEC NP-CR3402HL projector adopts high-brightness laser light source, 0.66-inch large-size DMD and nec cinema-level image quality adjustment. Even in the daytime or under the light, its color performance is excellent, and it is compatible with 4K ultra-high definition resolution, which also makes the picture have enough fineness. In terms of humanized design, there is also a good experience, which can completely become the C position of the main movie in the living room. You can watch the big screen, brush movies, eat popcorn and drink beer. No, it's a fine day.
As the main projector of home theater, I also suggest that it is better to equip it with a better broadcast source, otherwise it will waste its excellent image quality, but the choice of curtain is much more flexible. After all, it has the function of wall color correction.
Heart of the King 2 Click on the demo.